ThePoE chinjaari achinjaiyo inotsigira magetsi kune network tambo. Zvichienzaniswa nezvakajairikachinja, iyo magetsi inogamuchira terminal (yakadai se AP, digital kamera, nezvimwewo) haifaniri kuve newaya kuitira magetsi, uye kuvimbika kwetiweki yose yakakwirira.
Musiyano uripo pakati pePoE switch uye zvakajairwa switch
PoEchinjayakasiyana neyakajairikachinja, PoEchinjahaingogone kupa basa rekutapurirana rezvakajairwachinja, asiwo kupa simba rekupa basa kune imwe mugumo wetambo yetiweki.Semuyenzaniso, kune dhijitari yekuongorora kamera (inoda magetsi kuti ishande zvakanaka), asi haina kubatanidzwa kune magetsi, asi yakabatana kune imwe chete.chinjakuburikidza netambo yetiweki. Muchiitiko ichi, kamera haishande. Kana iyo kamera isingabatanidzi kune magetsi, asi tambo yayo yekutumira network yakabatana nePoEchinja, kamera inogona kushanda zvakanaka.
PoE yakakamurwa kuva yakajairwa uye isiri-yakajairwa. Iyo yakajairwa inozoona kana iyo yakabatana network michina ine PoE yekugamuchira simba kupera. Kana iripo, ichave inofambiswa, kana isiri, haizove nemagetsi uye inopa chete kutapurirana data. Izvo zvisiri-standard zvichapihwa zvakananga simba. Kana iyi link ikasaonekwa, mudziyo unogona kupiswa.
POEchinjatekinoroji uye zvakanakira
Pane zviyero zviviri zveiyo mainstream PoE switch pamusika, IEEE802.3af uye 802.3at, iyo inotsanangudza simba rekupa simba re15.4W uye 30W, asi nekuda kwekurasikirwa kweiyo nzira yekufambisa, iyo chaiyo magetsi i12.95W. uye 25．5W, rated voltage is DC 48v.
Paunenge uchishandisa PoEchinjaiyo inotsigira IEEE802.3af chiyero, simba remudziyo une simba harigoni kudarika 12.95W; zvakafanana, kana uchishandisa PoEchinjayeIEEE802.3at yakajairwa, simba remudziyo une simba harigone kudarika 25.5W.
Kazhinji, PoEchinjaiyo inotsigira IEEE802.3af/pachiyero panguva imwe chete, magetsi anogadziriswa. Semuenzaniso, kana yakabatana kune 5W mudziyo, inopa 5W yesimba; kana yakabatana kune 20W mudziyo, ipapo inopa 20W yesimba.
PoE switch switch inotsigira magetsi kune network tambo. Zvichienzaniswa neakajairika switch, zviteshi (zvakadai seAPs, makamera edhijitari, zvichingodaro) hazvidi kuvharwa newaya yemagetsi, uye akavimbika kune network yese. ThePoE chinjahaigone kungopa basa rekutapurirana rezvakajairwachinja, asiwo kupa simba rekupa basa kune imwe mugumo wetiweki tambo.
Iyo PoE yekumashure-yekupedzisira mudziyo inongoda imwe tambo yetiweki, inochengetedza nzvimbo uye inogona kutamiswa pakuda (nyore uye nyore), kuchengetedza mari.
Chero bedzi iyo PoEchinjayakabatana neUPS, inogona kupa simba kune ese kumashure-kumagumo ane hukama nePOE kana simba radzimwa. Vashandisi vanogona kusanganisa otomatiki uye zvakachengeteka michina yepakutanga nePoE midziyo panetiweki, uye michina iyi inogona kugarisana netambo dzeEthernet dziripo.